JPH0735411A - Water heater - Google Patents

Abstract

PURPOSE:To provide a hot-water storage type water heater, capable of saving electric power and obtaining hot-water quickly, by securing necessary amount and temperature of hot-water to permit the effective utilizing of a hot-water storage tank. CONSTITUTION:Water at the lower part of a hot-water storage tank 1 is introduced into a heater 2 by a pump 5 through a water inlet pipe 6 and hot-water, outputted from the heater 2, is introduced into the upper part of the hot-water storage tank 1 through a hot-water outlet pipe 7 to store hot-water sequentially from the upper part of the hot-water storage tank 1. A hot-water temperature detector 8, detecting a hot-water temperature, is provided in the hot-water outlet pipe 7 and a water amount detector 9 is provided in the water inlet pipe 6 while a controller 13 consisting of a setting means 10 for setting the amount and the temperature of hot-water stored in the hot-water storage tank 1, a hot-water temperature control means 11 for controlling the number of rotation of the pump 5 to make the hot-water temperature constant, and a water amount control means 12, integrating the amount of water, which is detected by a water amount detector, and stopping the pump and heater when the integrated amount of water has arrived at the set amount of hot-water. Accordingly, the necessary amount and temperature of hot-water can be secured by the controller 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water storage type water heater.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional water heater has a hot water storage tank 1 covered with a heat insulating material, a heater 2 at an inner lower portion of the hot water storage tank 1,
A water supply pipe 3 is provided at the bottom of the hot water storage tank 1, and a hot water supply pipe 4 is provided at the top.

In the above structure, the operation will be described. The heater 2 is energized in a state where the water supplied to the hot water storage tank 1 by the water supply pipe 3 is full, so that the water in the hot water storage tank 1 is uniformly supplied to a predetermined level. Boil to temperature and heat to water. Hot water in the hot water storage tank 1 is tapped from the hot water supply pipe 4 and used. Water is replenished from the water supply pipe 3 by the amount of used warm water.

[0004]

However, in the above-mentioned conventional configuration, since the water in the hot water storage tank 1 is uniformly boiled to a predetermined temperature, hot water of a required temperature cannot be obtained during boiling, or the hot water storage tank Since the capacity of is set to be large enough to match the maximum amount of hot water used, it is possible to secure an unnecessarily large amount of hot water when the amount of hot water used is small. There was a problem.

The present invention solves the above-mentioned problems, and provides a hot water heater which presets a required hot water capacity and hot water temperature to reduce the heater energization amount, saves power, and can obtain hot water quickly. Is the first purpose.

A second object is to learn the amount of hot water corresponding to the amount of hot water used and reduce the heater energization amount for further power saving.

[0007]

In order to achieve the first object of the present invention, a heater is provided outside the hot water tank, and a pump guides the water in the lower part of the hot water tank to the heater by a water inlet pipe to heat the water by the heater. The hot water is introduced into the upper part of the hot water storage tank by the hot water outlet pipe, and the hot water is stored in order from the upper part of the hot water storage tank. Means for setting the amount of hot water and the temperature of the hot water, and the water temperature control means for controlling the number of revolutions of the pump to make the temperature detected by the water temperature detector equal to the set hot water temperature and the amount of water detected by the water amount detector are integrated. A controller including a water amount control means for stopping the pump and the heater when the accumulated water amount reaches the set warm water amount is provided.

In order to achieve the second object, the water supply pipe is provided with a water supply amount detector, the controller integrates the water amount detected by the water supply amount detector, and stores the accumulated water amount in the hot water storage tank. A second warm water amount setting means for setting the warm water amount is provided.

[0009]

According to the present invention, with the above configuration, the required hot water volume and hot water temperature are set by the hot water capacity and hot water temperature setting means.
The pump speed is controlled by the water temperature control means, the hot water temperature detected by the water temperature detector and the set hot water temperature are made the same, the hot water is stored in order from the top of the hot water tank, and the water quantity detected by the water quantity detector is adjusted by the water quantity control means. By integrating, when the accumulated water amount reaches the set hot water amount, by stopping the pump and heater,
It is possible to provide a water heater that secures the required amount of hot water and the required hot water temperature, can effectively use the hot water storage tank, and that saves power and is capable of collecting hot water quickly.

Further, the amount of hot water used in the hot water storage tank, that is, the integrated value of the amount of water detected by the water supply amount detector is set as the set hot water amount,
The amount of water detected by the water amount detector is integrated by the water amount control means, and when the accumulated amount of water reaches the set hot water amount, the pump and heater are stopped to reduce the heater energization amount and achieve further power saving. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, the same reference numerals as those in FIG. 5 indicate the same members and have the same functions, and therefore detailed description thereof will be omitted, and different points will be mainly described. In FIG. 1, a heater 2 as a heating source is provided outside the hot water storage tank 1, and the water in the lower portion of the hot water storage tank 1 is guided to the heater 2 by the pump 5 by the pump 5, heated by the heater 2, and hot water is stored by the hot water discharge pipe 7. A hot water temperature detector 8 for detecting hot water temperature in the hot water outlet pipe 7 and a water amount detector 9 for either the water inlet pipe 6 or the hot water outlet pipe 7 are configured so that hot water is stored in order from the upper part of the hot water storage tank 1. A means 10 provided for setting the amount of hot water and hot water temperature stored in the hot water storage tank 1, and a pump 5
Of the hot water temperature detector 8 and the set hot water temperature are the same as the hot water temperature control means 11 that controls the number of revolutions of the hot water temperature detector 8 and the set hot water temperature. The controller 13 comprises a pump 5 and a water amount control means 12 for stopping the heater 2 when the amount is reached. Reference numeral 14 is a driving means for the pump 5 and the heater 2.

In the above configuration, the operation is processed in steps S1 to S1.
It demonstrates based on the control flow of FIG. 2 over S13.
When the device is turned on (S1) in FIG. 2, the hot water capacity,
The hot water temperature setting means 10 sets the required hot water amount and hot water temperature (S2, S3), and the driving means 14 turns on the pump 5 and the heater 2 (S4, S5).

Next, the hot water temperature detector 8 is operated by the hot water temperature control means 11.
The hot water temperature T1 is detected by (S6), the hot water temperature T1 is compared with the set hot water temperature T0 (S7), and the rotation speed of the pump 5 is controlled to be the same (S8). Store warm water in order.

Next, when the hot water temperature T1 = the set hot water temperature T0, the water amount control means 12 integrates the water amounts detected by the water amount detector 9 (S9), and the integrated water amount Q1 and the set hot water amount Q0.
(S10), and if Q1 <Q0, return to S6,
When Q1 = Q0, water quantity integration is stopped (S11),
The heater 2 and the pump 5 are stopped by the driving means 14.
(S11, S12) The controller 13 performs the above operation.

According to the configuration of this embodiment, the required hot water amount Q set by the hot water capacity and hot water temperature setting means 10 is set.
0, the hot water temperature T0, the rotation speed of the pump 5 is controlled by the hot water temperature control means 11, hot water of the temperature T0 is sequentially stored from the upper part of the hot water storage tank 1, and the hot water quantity Q0 is integrated by the water quantity control means 12, and the heater is heated. 2. By stopping the pump 5, the required amount of hot water and hot water temperature can be secured, the hot water storage tank 1 can be effectively used, and it is possible to save power and to obtain hot water quickly.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. 3 and 4, in FIG.
The same reference numerals as those in the first embodiment of FIG. 2 denote the same members, have the same functions, and perform the same operations, and therefore a detailed description thereof will be omitted, and different points will be mainly described.

From FIG. 3, 15 is a water supply pipe 3 or a hot water supply pipe 4.
16 is a controller 13 which is a water supply amount detector provided in any of
It is a second hot water amount setting means that is provided in the above and that integrates the water amounts detected by the water supply amount detector 15 to obtain the set hot water amount.

In the above-mentioned configuration, the operation is processed in steps S1 to S1.
Description will be made based on the control flow of FIG. 4 over S17.

When the hot water in the hot water storage tank 1 is used from the hot water supply pipe 4 while the hot water of the set temperature capacity is secured and the equipment is stopped (after step S13) (S)
14) The water flows into the hot water storage tank 1 from the water supply pipe 3 by the used amount. At this time, the amount of water detected by the water supply amount detector 15 is integrated by the second warm water amount setting means 16 (S15).

When the water supply is completed, the integration of the water amount is stopped (S16), and the integrated water amount Q01 is set to the set hot water amount Q0 (S17).

Therefore, the set hot water amount when the device is started next becomes the same as the hot water amount used, and the entire hot water storage tank 1 is less likely to be filled with hot water.
It is possible to further reduce power consumption by reducing the energization amount.

[0023]

As described above, the water heater of the present invention is
The heating source is provided outside the hot water storage tank, and the water in the lower part of the hot water storage tank is guided by the pump to the heating source by the water inlet pipe to be warmed, and the hot water is allowed to flow into the upper hot water storage tank by the hot water discharge pipe, and the hot water is stored in order from the upper hot water storage tank. A hot water temperature detector for detecting the hot water temperature in the hot water outlet pipe and a water amount detector for the hot water pipe are provided, and the setting means for setting the hot water amount and the hot water temperature to be stored in the hot water storage tank, and the rotation speed of the pump are controlled to control the hot water. The hot water temperature control means that makes the temperature detected by the temperature detector equal to the set hot water temperature, and the amount of water detected by the water amount detector are integrated,
By providing a controller consisting of a pump and a water amount control means for stopping the heating source when the accumulated water amount reaches the set hot water amount, the necessary hot water amount and hot water temperature can be secured and the hot water storage tank can be effectively used. It is possible to provide a water heater that saves power and is capable of quickly collecting hot water.

Further, according to the present invention, a water supply amount detector is provided in either the water supply pipe or the hot water supply pipe, and the controller integrates the water amount detected by the water supply amount detector to store the accumulated water amount in the hot water storage tank. By providing the second hot water amount setting means for controlling the hot water amount, the entire hot water storage tank is less filled with hot water, the heater energization amount is reduced, and further power saving can be achieved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a water heater according to an embodiment of the present invention.

[Fig. 2] Control flowchart of the water heater

FIG. 3 is a configuration diagram of a water heater according to another embodiment of the present invention.

FIG. 4 is a control flowchart of the water heater.

FIG. 5 is a configuration diagram of a conventional water heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot water tank 2 Heater 3 Water supply pipe 4 Hot water supply pipe 5 Pump 6 Water inlet pipe 7 Hot water outlet pipe 8 Hot water temperature detector 9 Water amount detector 10 Setting means for hot water amount and hot water temperature 11 Hot water temperature controlling means 12 Water quantity controlling means 13 Controller 14 Water supply amount detector 15 Second warm water amount setting means

Claims (2)

[Claims] 1. A hot water storage tank, a water inlet pipe from a lower part of the hot water storage tank to a heating source via a pump, a hot water outlet pipe from the heating source to an upper hot water storage tank, and a hot water temperature detection for detecting hot water temperature provided in the hot water outlet pipe. A vessel,
A water amount detector provided in either the water inlet pipe or the hot water outlet pipe,
A means for setting the amount of hot water stored in the hot water tank and the hot water temperature, a hot water temperature control means for controlling the number of revolutions of the pump to make the temperature detected by the hot water temperature detector equal to the set hot water temperature, and a water quantity detector A water heater provided with a controller including a pump and a water amount control means for stopping the heating source when the accumulated water amount reaches a set hot water amount. 2. A hot water supply pipe at the lower part of the hot water storage tank and a hot water supply pipe at the upper part,
Provide a water supply amount detector on either the water supply pipe or the hot water supply pipe,
And the water amount detected by the water supply amount detector is added to the controller,
The water heater according to claim 1, further comprising a second hot water amount setting means for setting the accumulated water amount to the hot water amount stored in the hot water storage tank.